A photo of the sorry lunch was posted on Twitter by Australian Licensed Aircraft Engineers’ Association federal secretary Steve Purvinas, though the post didn't confirm whether the sandwich was his, or someone he knows.

Purvinas' post about the pitiful 'bread' sandwich triggered a flood of comments from incredulous Twitter users.

In a follow up post, he explained that he posted the picture in hope that the airline will sort out their sad sanga problem.

"I’m following the pages and comments of frequent flyers and many of them agree. My comments being made in the hope that the airline rectifies the issues. My direct approaches have fallen on deaf ears," he wrote.

His efforts didn't go unnoticed. A Qantas spokesperson has since admitted their disappointment with the sandwich, saying they will follow up with the supplier, Homemade Food Co.